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Bi-Fold Door Repair Bi-fold doors can be used to connect indoors and outdoors. They offer an unobstructed view and provide easy access to your patio or garden. Over time, they may cause problems that will require repair of bi-fold doors. These problems are usually easy to fix and cost-effective. Misalignment Over time bifold doors can be damaged or misaligned due to wear and tear. The doors may not be closing properly, the track could be sagging or hinges may be loosening and need to be tightened. T